Refrigeration apparatus



May 1,' 34. L, s PARKER 1,956,621

BEFRIGERATION APPARATUS' Original Filed Aug. l, 1929 5 Sheets-Sheet l INVENTOR ITNESSES .Z--'f/rker ATTORNEYS May l, 1934.

L'. S. PARKER REFRIGERATION 'APPARATUS Original Filed Aug. l. 1929v 3 Sheena-snee?,V 2

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INVENTOR 13.5. Parker ATTORNEYS May 1,1934.' L. s. PARKER 1,956,621

REFR IGERATION APPARATUS' Original Filed Aug. l, 1929 3 sheets-Sheet 3 LLL ., M hun.

' BY Wwf/y,

? y ATTORNEYS Patented .May 1, 1934 PATENT OFFICE REFRIGERATION APPARATUS Levin S. Parker, Brooklyn, N. Y.

Application August 1, 1929, Serial No. 382,776

Renewed September 27, 1933 Claims.

This invention relates to refrigeration apparatus.

It is among the objects of the present invention to provide a novel and improved refrigeration 5 apparatus especially adapted for the congelation of fluids, such as in the manufacture of ice cream. A further object of the present invention is to provide a device of the character set forth, which utilizes the expansion of gases for the coolingduring the congelating process.

A further object of the present invention is to provide in an ice cream freezer, means operable by rotation of the material receptacle, for circulating lthe cooling fluid.

A further object of the present invention is to provide a novel and improved ice cream freezer and storing cabinet which utilizes the expansion of gases for maintaining a low temperature of the apparatus and for removing heat from the materials being frozen.

The present apparatus is especially designed for use in connection with gas refrigeration units, such as those now in use under the title of electrical refrigeration units.

Another important object of the present' invention is to provide a novel and improved combination and interrelation of parts, whereby the whole forms a novel, simple and improvedI construction well designed to meet the demands of economic manufacture.

Other objects and features of the present invention will be apparent from a consideration of the following specification taken in conjunction with the accompanying drawings, in which Figure 1 is a vertical section through one form of the present invention;

Fig. 2 is a top plan View partly broken away, of that form of the device shown in Fig. 1;

Fig. 3 is a sectional View taken on lines 3 3 o of Fig. 2;

Fig. 4 is a detail showing the receptacle retaining member; 1-

Fig. 5 is a top plan view partly broken away, showing a modified form of the present invention, and

Fig. 6 is a front elevation, partly in section, of that form of the device shown in Fig. 5.

Referring more particularly to that form of the invention shown in Figs. l to 4, it will be seen that the device includesr an inner brine receptacle 10, which is surrounded by suitable heat insulating material, as indicated at ll, the tank 10 and insulating material being housed within a suitableexternal cabinet 12, which, as indicated in Fig. 1, may, if desired, be supported upon the legs 13, to provide space thereunder for suitable gas circulating and condensing apparatus generally indicated by the numeral 14.

Within the tank 10 and preferably extending longitudinally thereof in the upper portion of the tank, a cooling unit 16 is mounted. In the present drawings, the cooling unit and connecting pipes therefor is shown as an electrical refrigeration cooling unit. It will be understood that the present invention is not confined to any specific 65 form of cooling unit and that although it is preferable to use a gas cooling unit as shown, other equivalent units may be used in lieu thereof. 'Ihe unit here illustrated includes the depending heat exchange tubes 17, and the unit is mounted through one of the end walls of the tank 10.

Removably and rotatably mounted within the tank 10, congelation chambers 18 are provided, and may be supported within the tank by the provision of supporting brackets 19, which are carried by the cover 20 of the cabinet. The brackets 19 are substantially U-shaped and cross the lower part of the tank to provide a support for a bearing 21 upon which the central projection 80 of the chamber 18 is mounted. The sides of the brackets 19 are spaced apart a distance greater than the diameter of the chambers 18, so that free rotation of the chambers within the supporting brackets may be had. The chambers 18 may be 85 placed in and taken from the tank through suitable apertures 22 in the cover, which apertures may be closed by heat insulating closure 23 when the device is not to be rotated.,

For mixing the material within the chambers 18 during the freezing process, as in the making of ice cream, the closure 23 is displaced by an operating closure structure 24, which includes suitable means 25 for imparting rotary movement to the chambers 28 by way of the squared 95 head 26 of the top thereof. The structure 24 further provides for the rotation of the internal paddle 27 of the chamber 18. The structure 24 may conform to any desired conventional mechanical form and is substantially as used in the present-day ice cream making equipment. The structure.24l may be removably associated with the top 20 by the use of suitable thumb screw 28, which, if desired, may also be used for securing the closure 23 to the top 20. f

For holding the chambers 18 properly upon the bearings 21, suitable rotatable dogs 29 are provided, which are adapted to engage the upper flange 30 of the chamber and lie thereover to hold the chamber against the vbearing 21; lo

When it is desired to remove the chamber, the dogs 28 may be rotated so that their inner ends are free from the ange 30 of the chamber.

It will be understood that in the operation of the device, the tank 10 is filled with brine or other 10W freezing point liquid. For circulating the liquid over the cooling unit during the rotation of the chambers 18, the chambers are provided with circulating flanges 31 which extend longitudinally of the chambers and which force the brine to circulate over the cooling unit so that an even temperature is maintained throughout the brine during the operation of the device.

From the foregoing it will readily be seen that the apparatus provides for either the storage of materials within the chambers 18, or for the mixing and congelation of materials within the chambers, and that due to the rotation of the chambers by the provision of the flanges 31, the cooling duid or brine is circulated over the cooling unit by the rotation of the chambers.

It will be understood that the invention is not conned to the specic structural details herein shown, but that changes, modifications and the full use of equivalents may be resorted to in the formation of the invention Without departing from the spirit or scope thereof.

Referring more particularly to Figs. 5 and 6 of the drawings, it Will be seen that the apparatus may be modied to provide for the storage of receptacies in coniuncticn with the rotary mount ing thereof. In this form of the/invention, the tank 10, insulation 1l, and outer cabinet 12 are provided. The top 20 of the cabinet has in addition to the supporting brackets 19, a pair oi depending receptacles 32 which are each adapted to receive two oi the chambers 18. As the chainbers within the receptacles 32 are usually used fer the storage of ice cream or similar material, it is not desired that the chambers be in direct contact ith the brine and thus they are simply placed 'within the receptacles 32 about v: ich 'the brine is circulatiz by theI rotation oi the cham bers 18 in which the material is being mixed and frozen. This iorzn ci. the present invention illustrates one of the many modifications of the invention, it being` understood that the device may be dei ined to carry` in storage, many of the chambers 18 as desired, or to provide for the rotatable mounting of the chambers within the tank as needed.

In the form of the invention shown in Figs. 5 and 6, it will be seen that the cooling units i6 are preferably arranged across the tank so that the circulation of the brine by rotation ol the chambers will pass over the units to maintain an even temperature throughout thc brine and properly cool both the rotating chambers and the receptacles 32. In this form of the invention the brackets 19. bearinc` 21, operating structure 24, and securing dogs 29 are utilized in the manner recabar hereinbefore described in Connection with Figs.

From the foregoing it will readily be seen that the invention provides a novel refrigeration apparatus, which provides tor the circulation of a cooling medium by the rotation of a congelation chamber, and it Will be understood that numerous changes and modifications in the structural features of the present invention as herein presented may be resorted to without departing from the spirit or scope of the invention as outlined in the appended claims.

What is claimed is:

l. In a refrigeration apparatus. the combina-` tion with a brine tank, of a cooling unit within said tank, a support for rotatably supporting a congelation chamber, and means for clrculating the brine Within said tank by the rotation of said congelation chamber, said means comprising flanges carried by said chamber whereby rotation of said chamber Will circulate said brine.

2. In a device of the class descrbed, a tank, an apertured cover for said tank, a substantially U- shaped support for a congelation chamber depending rorn said cover Within said tank and from about the aperture therein, and means seated on said cover above the aperture therein for rotating said chamber in saidsupport.

3, In a device of the class described, a tank, an

apertured cover for said tank, a substantially U- shaped support for a congelaton chamber depending rom said cover Within said tank and from about the aperture therein, and means seated on said cover above the aperture therein for rotating said chamber in said support,.said means being removable from said cover to expose the said aperture for 'the seating therein o an auxiliary cover therein.

4. In a device of the class described, a tank, an apertured cover ier said tank, a substantially iishaped support depen ing from sai-d cover within saidtank and ironA bout the aperture ther Vin, a bearing mounted on the upper side of the loi/ver connected portion oi said support, a congelation chamber mounted on said bearing within said support, and means seated on said cover above the aperture therein for rotating said congelation chamber.

5. In a device of the class described, a tank, an apertured cover for said tank, a substantially U- shaped support depending from said cover within said tank and from about the aperture therein, a bearing mounted on the upper side of the lower connected portion oi said support, a congelation chamber mounted on said bearing Within said support, and means seated on said cover above the aperture therein for rotating said congelation chamber', said means being removable from said cover to expose the sai-d aperture for the seating ci an auxiliary cover therein.

LEVIN S. PARKER. 

